Rotary impact drill bit



The file of this patent contains a least one drawing executed in color. Copies of this patent with color drawings will be provided by the United States Patent and Trademark Office upon request and payment of the necessary fee.

FIG. 1 is a front view of a rotary impact drill bit illustrating my new Design;

FIG. 2 is a left side view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is an enlarged view of the upper portion of the drill bit shown in FIGS. 1-6, taken from a direction between the front and left side views;

FIG. 8 is an enlarged rear view of the upper portion of the drill bit shown in FIGS. 1-6; and,

FIG. 9 is an enlarged top and rear perspective view of the upper portion of the drill bit shown in FIGS. 1-6.

I consider the blue-colored helix as one of the ornamental features of my new Design. 

The ornamental design for a rotary impact drill bit, as shown and described. 